How the EyeAge test works

EyeAge is a 10-minute vision screening that runs in your phone's browser. Seven short tests measure how your eyes are doing, and at the end you get one number: your Eye Age, the age your eyes are performing at compared with what is typical for people your age.

There is nothing to install and no account to create. Start the test →

Before you start

You answer three questions: your age (you must be 18 or older), your height, and whether you wear glasses or contacts.

EyeAge then sets two things up so every letter and line is drawn at its true size:

The seven tests

1. Sharpness (distance vision)

How far can you read? One letter at a time, each smaller than the last, one eye at a time with the other covered by your palm. It's like reading a signboard before you are right next to it. About 40 seconds per eye.

2. Near vision

Lines of text at reading distance, getting smaller, rated Clear, Blurry but readable, or Can't read it. Near vision is the reading that changes most with age, because the lens inside the eye slowly stiffens.

3. Focus

A fan of lines. Does one line look darker or sharper than the rest? If one direction always stands out, your eye may focus unevenly (astigmatism). This is the reason headlights can streak at night.

4. Colour

Circles of coloured dots, each with a number hidden inside. Read it off, or say you see nothing. The test includes both red-green and blue-yellow plates. About a minute, both eyes open.

5. Contrast

Rows of letters, each fainter than the last, one eye at a time, until they get too faint to see. Contrast is what lets you spot the step in a dark stairwell. The screen gets a quick brightness check first, because the test can't work on a dim or washed-out screen.

6. Central field

You look at a dot in the middle of a grid and, without moving your eyes, say whether the lines around it look straight. It takes about 20 seconds per eye. It is the only test that can pick up changes you would never feel. If anything looks wrong, EyeAge tells you clearly to see an eye specialist.

7. Eye strain

Six quick questions about how your eyes have felt lately, such as tiredness or heaviness at the end of the day.

How your Eye Age is worked out

Every test gives you a reading out of 100, shown next to what is typical. Your Eye Age is built only from the readings that change with age: near vision, contrast, and blue-yellow colour vision (the lens of the eye slowly yellows over the years). Eye strain can add a little.

Readings that don't follow age, such as short-sightedness from your teens, astigmatism or inherited red-green colour blindness, still appear in your results. They are kept out of the Eye Age number so they don't make a young person's eyes look old.

The result reads like this: Your eyes are 53. You are 45.

What it costs

The first three tests (sharpness, near vision and focus) run before you pay, so you can see how the test works. Then:

It is a one-off payment, with no subscription and nothing that renews. Payment is through Cashfree (UPI, cards and more). EyeAge never sees your card or UPI details.

Your privacy

Your answers, your scores, your Eye Age and your eye photo are calculated on your phone and never leave it. EyeAge has no accounts and never receives your results. Full details are in the Privacy Policy.

What EyeAge is not

EyeAge is a screening and awareness tool. It does not diagnose eye conditions, measure a prescription, or replace an examination by a qualified optometrist or eye specialist. It won't replace your eye doctor. It will tell you when it's time to see one.

Questions? Read the FAQ →